发动机排气噪声是汽车噪声中一个主要声源，消声器是控制排气噪声的一个重要方法。

Engine exhaust noise is one of the main sources of automobile noise, and using of silencer is an important method controlling exhaust noise.

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发动机排气噪声是汽车噪声中一个主要声源，消声器是控制排气噪声的一个重要方法。

Engine exhaust noise is one of the main sources of automobile noise, and using of silencer is an important method controlling exhaust noise.

youdao